let url = window.location.href;
let paramStr = url.split('?')[1]; 
let paramArr= paramStr.split('&');
let paramObj = {}; 
 for(let i=0;i<paramArr.length;i++){
     let p_item=paramArr[i];
      paramObj[p_item.split( '=')[0]]=p_item.split( '=')[1]
    
    }
